1.   A variety of base designs and vertical columns, which add interest to the structural design, are available.

2.   But the report said not all of the remedies involve structural design issues.

3.   He said the investigation would examine questions raised about the structural design, and any behavior by students or others that might have contributed to the collapse.

4.   His specialties include earthquake engineering and spacecraft structural design.

5.   Nuclear industry officials say there are key differences between the structural designs of nuclear plants and the World Trade Center.

6.   The American jet was still early in its flight to the Dominican Republic and its airspeed would have been well below structural design limits.

7.   The report also credits the structural design of the towers for surviving the initial impact.

8.   The structural design of the towers, common today, was considered innovative in its day.

9.   With the help of structural engineer Wayne King of Ipswich, it was built on a shallow foundation using a structural design new to this country.

10.   Company spokesman Stanhope Williams said officials were reviewing the structural designs of the residue storage dam.